Li Zhao1, Michael Salerno2,
Christopher M. Kramer, 23, Craig H. Meyer1,3
1Biomedical Enginnering, University of
Virginia, Charlottesville, VA, United States; 2Medicine,
University of Virginia, Charlottesville, VA, United States; 3Radiology,
University of Virginia, Charlottesville, VA, United States
The
Dark Rim artifacts in adenosine stress perfusion imaging are not completely
understood, with Gibbs ringing and cardiac motion thought to be contributing
factors. In this work we provide
strong support to the idea that dark rim artifacts come from motion by
experimental data, and it also shows that these artifacts are more
significant in some portions of the cardiac cycle than in others. Moreover, a
1D motion model is developed and used to predict how dark rim artifacts vary
over the cardiac cycle.